21371102 has 4 divisors (see below), whose sum is σ = 32056656. Its totient is φ = 10685550.

The previous prime is 21371101. The next prime is 21371107. The reversal of 21371102 is 20117312.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21371101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5342774 + ... + 5342777.

It is an arithmetic number, because the mean of its divisors is an integer number (8014164).

Almost surely, 2^21371102 is an apocalyptic number.

21371102 is a deficient number, since it is larger than the sum of its proper divisors (10685554).

21371102 is a wasteful number, since it uses less digits than its factorization.

21371102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10685553.

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 21371102 is about 4622.8889236061. Note that the first 3 decimals coincide. The cubic root of 21371102 is about 277.5080840650.

Adding to 21371102 its reverse (20117312), we get a palindrome (41488414).

The spelling of 21371102 in words is "twenty-one million, three hundred seventy-one thousand, one hundred two".